Altera Cyclone II BOard

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nikhilna007

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my verilog code needs to read input from a text file.
the code was synthesized using Quartus II tool
but when i burn the code to Cyclone II kit . its not working.

is there any problem if i read the input from a text file
 

Unless you are using $readmem/$readmemh to load a ROM, any Verilog text I/O reading of files is ignored by synthesis tools.
 

i used $readmemb to read the text file.


still iam not getting the result.
thanks for your reply
 

Processing of design input files and possible problems will be reported in the Quartus compilation report. Memory initialization data are converted to a *.mif file that can be inspected. Everything at your fingertips.
 

nikhilna007 said:
my verilog code needs to read input from a text file.
the code was synthesized using Quartus II tool
but when i burn the code to Cyclone II kit . its not working.

is there any problem if i read the input from a text file
Click to expand...

You can't 'read text file' directly from FPGA. How about instantiating a M10K memory block and initialize it with MIF?
 

doham said:
You can't 'read text file' directly from FPGA.
Click to expand...

What!?
[sarcasm_mode]
Sure you can just add a SATA interface to the FPGA and a Nios-II to control it. Then you can write software to pull data off the NTFS/FAT32/FAT16 drive. ;-)
[/sarcasm_mode]
 

ads-ee said:
What!?
[sarcasm_mode]
Sure you can just add a SATA interface to the FPGA and a Nios-II to control it. Then you can write software to pull data off the NTFS/FAT32/FAT16 drive. ;-)
[/sarcasm_mode]
Click to expand...

'directly' ?

LOL...

While you're at it, add virtualization so to run full win7 OS too. ;-)
 

doham said:
'directly' ?

LOL...

While you're at it, add virtualization so to run full win7 OS too. ;-)
Click to expand...

Come on...now you're getting into the realm of fantasy ;-)...you need a processor with a bit more omph than a Nios-II to run win7...not sure anyone has a soft core processor with that much horsepower (gee, even an i7 has trouble running it).

Now you could run a 'nix on the Nios. I think the NEEK demonstration board uses something like a ulinux and keeps stuff on a memory card.
 

ads-ee said:
Come on...now you're getting into the realm of fantasy ;-)...you need a processor with a bit more omph than a Nios-II to run win7...not sure anyone has a soft core processor with that much horsepower (gee, even an i7 has trouble running it).
Click to expand...

oh,... you WERE serious... okay.

ads-ee said:
Now you could run a 'nix on the Nios. I think the NEEK demonstration board uses something like a ulinux and keeps stuff on a memory card.
Click to expand...

BTW, we have this on-going project:
https://code.google.com/p/cubicboard/

A co-worker of mines had Linux (uclinux?) running on NIOSII on CycloneV. Anyone interested please let me know.
 

Beyond off-topic chat, we still don't know what the OP wants to achieve, what he's actually doing and where it goes wrong.

Maybe he's using $readmemb for memory initialization as required and there's an unrelated issue. Maybe he imagines $readmemb to read data at runtime. But if so, from which file on what media?

Unfortunately the OP's posts are pretty ambiguous.
 

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